当前位置: X-MOL 学术Appl. Petrochem. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis and study of aroylethyl(ethyl)-xanthates as stabilizers of polymeric materials
Applied Petrochemical Research Pub Date : 2021-09-14 , DOI: 10.1007/s13203-021-00281-z
Tanzila Akchurina 1 , Sabira Sardarova 1 , Khuraman Efendiyeva 1 , Irada Eyvazova 1 , Vagif Farzaliyev 1 , Afsun Sujayev 1
Affiliation  

The number of aroylethyl (ethyl)xanthates have been synthesized by the reaction of the exchange decomposition of β-dimethylaminopropiophenone hydrochlorides with potassium xanthate containing several functional groups (C=O, C=S, C–OH), which determine the use of these xanthates as stabilizers with internal synergy to polymeric materials. It was shown that the thermal stability of the compounds, depending on the nature of the substituent in the benzene ring of the molecule was observed in the temperature range of 149–196 °C. It was revealed that aroylethyl(ethyl)xanthates had a stabilizing effect due to the suppression of thermo-oxidative destruction of polyethylene; they increased the induction period of polyethylene oxidation by 2–6 times, and the oxidation rate was reduced by about 3–9 times. Among the studied compounds, 4-hydroxybenzoylethyl (ethyl)xanthate had the greatest stabilizing effect. The study of the mechanism of the stabilizing action of the compounds showed that xanthates react with cumene hydroperoxide (CHP), which proceeded through the stage of formation of an intermediate product that actively decomposed CHP, i.e., the oxidation chain was terminated by the decomposition of the CHP not by the initial xanthates but by their transformation products.



中文翻译:

高分子材料稳定剂芳酰乙基(乙基)黄原酸酯的合成与研究

通过β-二甲氨基苯丙酮盐酸盐与含有多种官能团(C=O、C=S、C–OH)的黄原酸钾进行交换分解反应合成了多种芳酰乙基(乙基)黄原酸酯,这决定了这些化合物的用途黄原酸盐作为稳定剂,与聚合物材料具有内部协同作用。结果表明,在 149-196 °C 的温度范围内观察到化合物的热稳定性,具体取决于分子苯环中取代基的性质。结果表明,芳酰基乙基(乙基)黄原酸酯由于抑制聚乙烯的热氧化破坏而具有稳定化效果;他们将聚乙烯氧化的诱导期延长了2-6倍,氧化速率降低了约3-9倍。在所研究的化合物中,4-羟基苯甲酰乙基(乙基)黄原酸酯具有最大的稳定效果。对化合物稳定作用机理的研究表明,黄原酸盐与氢过氧化异丙苯(CHP)发生反应,经过形成积极分解CHP的中间产物的阶段,即通过分解终止氧化链。 CHP不是通过最初的黄原酸盐而是通过它们的转化产物。

更新日期:2021-09-14
down
wechat
bug